ullmann



H. ULLMANN.

TELEPHONOGRAPH. APFLICATIONVFILED MAR. 26. 1919.

l ,3 1 0,90@ Patented July 22, 1919.

-Z SHEETS-SHEET l.

H. ULLMANN.

TELEPH'ONOGRAPH. v APPLICATION FILED MAR. 26. I919.

Patented J lily 22, 1919.

2 SHEETS-SHEET 2.

HUGO ULLMANN, OF ST. GALLEN, SWITZERLAND.

TELEPHONO GRAPH.

Specification of Letters Patent.

Patented July 22, 1919.

Application filed March 26,1919. Serial No. 285,352.

To all whom it may concern:

Be'it known that I, Hneo ULLMANN, a citizen of the Swiss Confederation, and residing at St. Gallen, Switzerland, have invented certain new and useful Improvements in Telephonographs, of which the following is a specification.

The present invention has reference to certain new and useful improvements in telephonographs, or telescribes and relates more particularly to an apparatus and installation which allows of recording the telephonic conversation of two connected parties during all of the conversation or only part of it, either party being able to throw his telephonographic unit into or out of operative connection at will without in any way interfering with the operation of the ordinary telephonic unit, so that conversations of special importance may be permanently record-.

ed by either party without the other party being aware of it.

In order to make my invention more readily understood I will now describe it with reference to the accompanying drawings in which Figure 1 is aside view of the apparatus, with the facing casing wall removed; Fig. 2 is a top view with the cover partly broken away; Fig. 3 is a vertical section on line AA of Fig. 1; Figs. 4 and 5 respectively represent side and edge views of a detail of the driving works, and Fig. 6 is a diagram of the wiring connections.

The casing 1 is provided with a two-part cover 2 and a similarly divided side wall 3, and the front wall 4 with the cover flap 2 and the side wall flap 3 can be folded up on hinges 5 to give access to the apparatus mounted in the casing 1. In the inclosure B is provided a clockwork of suitable construction, which is wound up by means of the outwardly protruding key I) and drives the shaft 6. The works are provided with the usual train of wheels and with a governbr not specially shown, a protruding pointer 7 controlling the operation of the governor. Obviously, in place of a spring driven clock work also any other driving mechanism, for instance an electric motor may be used. In the train of wheels is arranged an arresting wheel 8 riding loosely on the hub 36 fixed on the shaft 35 and presenting a laterally extending tooth 37 designed for cooperation with a cut-out 38 of the hub 36 with contact faces or walls 39 and 40 (Figs. 4 and 5). Within the cut-out 38 there is interposed also fixed on this shaft 14 and gears with a wheel 18 (Fig. 3), and the latter in turn meshes with the toothed wheel 19 fixed on the screw spindle 20 housed in the guide tube 21. This latter is secured at one end in the arm 15 of the bearing 15 and at the other end in the upright 22 and serves to guide the carriage 23. This latter supports the telescribing receiver 24, which essentially is in the form of an ordinary watch case receiver with a recording stylus fixed to the diaphragm, which stylus 25 cooperates with the wax cylinder 16. The screw spindle 20 serves for the feed of the carriage 23 along the guide tube 21 by means of a feed screw segment which at its one end meshingly co operates with the screw spindle 20 and at its other end supports the recorder carriage, and a setting handle 26 is rigidly secured to this screw segment, which latter extends through a longitudinal slit in the guide tube and can be brought into or out of operative contact with the screw spindle by respective manipulation of the handle 26. All these parts and their cooperation are well known in the art, and for that reason need not be particularly described here, all the more as they form no part of the invention proper.

From the carriage extends downwardly the lever arm 27 whose lower end is in the shape of a half-circle adapted to coact with a guide and contact rod 28 arranged below the recording mandrel parallel to the tube 21. This rod 28, which ,is composed of two halves 28 and .28" electrically insulated as at Z (Fig. 6), is electrically insulated from its end supports 22 and 15 respectively. To the handle 26 is secured by the intermediary of the link 29' the lever arm 30 whose lower end loosely encircles the rod 28 so that it can readily be traveled thereon in a laterally extending tooth or cam 30 adapted to cooperate with the-lower end of the depending arm 27 in such manner that, depending upon the manipulation of the bandle 26, the lower curved end of the arm may be let down to contact with the divided rod 28 or may be lifted ofi out of contact therewith. The curved extremity of the arm 27 supports two insulated contact segments 27 and 27 designed to respectively contact with the facing half-cylinder conductors 28 and 28 for closing an electrical circuit through the magnet system in the recorder 24. The upper contact member 27" contacts with a contact bar K when out of contact with the half-cylinder 28. A pointer 31 is associated with the handle 26 and the latter travels in a transverse slot 32 in the casing cover, .a scale 26 being provided along this slot over which the pointer 31 travels indicating thereby the momentary position of the recording stylus relative to the wax cylinder.

The wiring is that of a normal telephone hook-up with local microphone battery, and

. the transmitter M as well as the receiver H are of the usual type. The electrical cir cuit for the transmitter is indicated by 33 and that for the receiver by 34. From circuit 33 a branch 33 leads to the electromagnet 12, from there over the feed screw spin dle 20 to the magnet system in the recorder 24 and thence to the halt-cylinder 28. From the receiver circuit 34 a branch 34 leads to the recorder 24 and thence to the lower contact segment 27*. The up er segment 2? is connected by the wire 3' b to the transmitter, and the lower half-c linder 28 is connected by the branch 34" to t e receiver circuit. A third branch wire 33 connects contact member K with the transmitter circuit 33. The branch 33 includes the electromagnet 12, which as above described by means of the pawl 9 controls the mechanism for operating the recorder man'drel, and a non-inductive resistance or condenser C is connected in parallel, to deflect the voice currents from the electromagnet which is subject to self-inductance.

The described apparatus can be 0" erated by local battery as well as by central attery current and is preferably arranged close to the telephone station. he branch circuits 33 33 and 33 are cut into the transmitter circuit 33, and the two branches 34 and 34 are connected to the two terminals for the second receiver usually provided in a telephone station.

In the inoperative position of the apparatus the handle 26 assumes the position indicated in Fig. 3 by the dash-dot ine, the

bipolar contact end of the arm 27 is out of" contact with two-part contact rod 28 and the circuits 33, 33 33 and 3-4, 3-4, 34* are interrupted, and the telephone ap'h unit is thus disconnected. The su scriber is called up over the ordinary call circuit,

which forming no part of the invention is not specially shown in the drawing. By taking the receiverHofi' its switch hookGcontact is made between f and f,which closes the transmitter circuit 33 which includes the induction coil 10, the wire 33, contact K, wire 33", transmitter M, hook G and local battery S. now Wishes to phonographi'cally record the conversation coming and going over the line the handle 26 is laid over into the full line position in Fig. 3, which movement causes the lever arm 30 to swing in the direction of the arrow a, when its tooth 30 will allow the arm 27 to contact with the two-part contact rod 28, the recorder 24 being let down simultaneously onto thewax cylinder 16. At the same time the spindle 20 and the traveling carriage 23 are intercou led. The contact member 27 contacts wit the contact member 28 and the contact member 27- with the contact member 28", which completes the several circuits. By the closure of the circuit 33 the control magnet'12 is excited, the armature is attracted and the clockwork for dr1v1ng the phonograph can start. In startmg, the stop wheel 8 by reason of the expandmg spring 39 will at first gain on t e hub 36 until the tooth 37 contacts with the wall 40 of the cut-out 38. The rotary motion of the clockwork is transmitted from the shaft 6 to the shaft 14 and thence by the gear tram 17, 18 and 19 to the spindle 20, wlth the result that the wax cylinder on the shaft 14 is rotated and simultaneously the carriage 23 with its recorder 24 is traveled parallelly along the shaft 14.

The current pulsations produced in the transmitter M excite the electromagnetic system in the recorder 24, which latter now lies in the circuit 3-3 and cause its stylus to record the conversation on the wax cyl nder, and they also are transmitted by the induction coil a over the line wires L to the other party. Similarly the volce currents comin in over these wires from the other end 0 the line pass through the receiver H and also through the electromagnet system in the recorder 24 and are thus l1kewise reoorded on the'wax cylinder.

If, at the end of the conversat1on, the receiver H is placed back into its switch hook, the pawl armature 9 is immedlately dropped by the magnet 12 and engages n the stop wheel 8, which however does not sto the driving works at once but allows it to continue its operation for a short period of time until the spring 41 is fully comressed between the wall 39 and the tooth 7. By this retarded sto ping action the wax cylinder can still malie a few revolw tions, for the purpose of spacing apart successivel'y records conversations, so that they do not run together and can readily be If the person at thetelephone told apart when reproducing them again at a future time.

The handle 26 is now brought back again to the normal ofi position, which interrupts the circuit through the phonographic recorder and also lifts the latter off the wax cylinder, so that it can readily be removed from its mandrel. With the handle in the normal, inoperative position, all phonographic connections are bI'OkBIl and the apparatus is connected up for ordinary telephonic conversation. Obviously, in place of the cylindrical recording member, also a disk recording'member may be used.

What I clalm is 1. In a telephonographic system for at will recording all or part of the conversation between two telephonically connected parties, the arrangement that a manually operable contacting member, comprising a handle and a depending contact arm, in its operative position causes a recorder with its recording stylus to descend into operative contact with a wax cylinder and connects the recorder across the receiver circuit as well as across the transmitter circuit of the telephone station, and also by the local battery current causes the electromagnetic release of a driving mechanism for operating the phonographlc unit, which contacting 1 memberin its inoperative position closes the transmitter circult direct and cuts out the phonograph unit, substantially as set forth.

2. In a telephonographic system comprising a telephone unitand a phonograph unit and means for at will electrically intercoupling the two units, in combination, a trans- -well known manner the mandrel supporting the wax cylinder and the traveling carriage supporting an electromagnetic recorder, and hand lever means for respectively moving said recorder into operative contact with the Wax cylinder and for simultaneously closing the several circuits in such manner that the incoming and outgo ing voice currents are forced to pass through the electromagnetic systems of said recorder, and for lifting said recorder out of contact with the wax cylinder and simulta neously electrically disconnecting the phonographlc unit and closing the ordinary telephone system direct, substantially as shown and described.

HUGO ULLMANN. 

